fix(cli/spinner): export private type aliases used in public API

[jsejcksn]

Ref: #3968

I saw this new feature in the release notes for 0.210.0 and noticed that there's no way to access the Color type alias which is used by the public options property at SpinnerOptions.color. This exports that union and one of its members which was also still private.

deno_std/cli/spinner.ts

Lines 41 to 58 in 5ddf32a

	/** Options for {@linkcode Spinner}. */
	export interface SpinnerOptions {
	/**
	* The sequence of characters to be iterated through for animation.
	*
	* @default {["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"]}
	*/
	spinner?: string[];
	/** The message to display next to the spinner. */
	message?: string;
	/** The time between each frame of the spinner.
	*
	* @default {75}
	*/
	interval?: number;
	/** The color of the spinner. Defaults to the default terminal color. */
	color?: Color;
	}

deno_std/cli/spinner.ts

Lines 13 to 27 in 5ddf32a

	// This is a hack to allow us to use the same type for both the color name and an ANSI escape code.
	// ref: https://github.com/microsoft/TypeScript/issues/29729#issuecomment-460346421
	// deno-lint-ignore ban-types
	type Ansi = string & {};
	type Color =
	| "black"
	| "red"
	| "green"
	| "yellow"
	| "blue"
	| "magenta"
	| "cyan"
	| "white"
	| "gray"
	| Ansi;

[iuioiua]

Towards #3764 and #3878.

[iuioiua]

Nice catch! Thank you.